Demountable wheel



L. BAUMGARTL; DEMOUNTAB LE WHEEL. APPLICATION. FILE D MAR.27, I917:

PajtentdSept. '21, 1920.

3 SHEETS-SHEET l.

L. BAUMGARTL.

DEMOUNTABLE WHEEL.

APPLICATION FILED MAILZI, 19H.

. "1, 5 ,5 PatentedSept. 21,

3 SHEETS-SHEE "5& .9

'LQ BAUMGARTL.

DEMOUNTABL E WHEEL.

APPLICATION FILED itzi, 1917.

Patented Sept. 21, 1920.

3 SHEETS-SHEET 3.

* cam-ring; and Fig. 7,

UNITED STATES PATENT OFFICE- LEROY BAUMGARTL, OF CHICAGO, ILLINOIS.

DEMOUNTABLE WHEEL.

Application filed March 27, 1917. Serial No. 157,781.

T 0 all whom it may 0011 oer n:

Be it known that I, LEROY BAUMGARTL, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Demountable Wheels, of which the following is a specification.

My invention relates, more particularly, to wheels'involving an inner hub-member adapted to be driven, in the case of a drive-wheel, in which case, it would be connected with a drive-mechanism, or mounted in bearings to rotate freely when it is not a drive-wheel; anouter to telescope with the inner hub-member and to which the spokes of the wheel are connected; and means for 'releasably holding the outer hub-member in such relation to the inner hub-member. that these two members will operate as a unit.

My primary object is to provide a novel and simple construction of wheel of the character above referred to, which will permit the outer hub-member and the parts carried thereby to be easily and quickly assembled with, and removed from, theinner hubmember and which will be strong in construction and positive in operation.

Referring to the accompanying drawings,

\ Figure 1 is a view in longitudinal sectional elevation of the hub-portion of a wheel constructed in accordancewith my invention,

the hub-members being shown in assembled relation; Fig. 2 is a broken section taken at the line 2 on Fig. 3 and viewed in the direction of the arrow; Fig. 3 is a section taken at the irregular line 3 on Fig. 1 and viewed in the direction of the arrow, showing the clips in elevation; Fig. 4: is a broken sectional view taken through the flanges of the inner and outer hub-members and showing means for initially separating the hub-members in the disassembling operation; Fig. 5 is a face view of a cam-equipped ring forming a part of the locking mechanism for the wheel; Fig. 6 is a broken section taken at the line 6 on Fig. 4: and viewed in the direction of the arrow, this view showing a detail of the means for rotatably adjusting the a View in elevation of the pinion-equipped shaft, through the medium of which the cam-ring is actuated.

The inner hub-member of the wheel is represented at 6, it being understood that this hub-member may form desired to adapt it to serve as a hub of hub-member adapted be of any internal a drive-wheel or a driven wheel of a vehicle, practice remaining attached to the vehicle, namely to thedriving-axle of the vehicle when the wheel is a drive-wheel and journaled on a stationary axle when the wheel is not one of the drive-wheels of the vehicle. The outer hub-member of the wheel is represented at 7, this hub-member in practice being connected with spokes (not shown), to

this part of the wheel structure in I the outer extremities of which the felly (not shown) would be attached, whereby this outer hub-member, the spokes and f'elly referred to would thus be connected together and the whole adapted to be bodily removed.

from, and assembled with, the inner hubmember 6, as desired, the outer hub-member 7 being hollow and adapted to telescope with the inner hub-member.

In the particular embodiment illustrated, the outer end of the inner hub-member 6 is of frusto-conical form, providing the tapered, or wedge, surface 8, and its inner end carries an annular flange represented at 9. The internal form of the hub-member 7 is such that it will snugly fit the tapered portion 8 of the hub-member 6 when assembled therewith, the inner end of the hubmember 7 being equipped with an angle-shaped flange 10, the portion 11 of which extends substantially parallel with the flange 9 and isspaced therefrom, as shown, and the annular portion 12015 which overlaps the periphery of the flange 9, thus forming with the flanged portion 9 of the inner hub-member an annular housing about the latter.

The portion 11 of the outer hub-member 7 is provided, preferably at equal intervals, with a series of pins 13 ally from the flange 11, in a direction enerally lengthwise of the hub, and into soc ets portions 15 of the 14 provided in thickened flange 9 at its inner side. The pins 13 are rigidly held in position on the flange 11 by means of the flanges 16 and 17 interlocking with the inner. and outer faces of the flange 11,th'ese pins and the sockets 14;, in the par-- ticular illustrated embodiment of the invention, being of such form and size that the inner ends of the pins 13 will snugly fit 1n the sockets 14 when the inner and outer hubmembers are assembled to the positionshown in Fig. 1. It may be here stated that according to the preferred illustrated embodiment of the invention the .pins 13 operate to hold the inner and outer hub-members towhich extend latershouldered holding or looking action is supplemented by a second series of pins 17, which are rigidly secured to the flange 9 to extend laterally therefrom to the right in Fig. 1 and into sockets 18 in the flange 11 when the parts of the hub are assembled.

- 'In accordance with my invention, means are provided for forcibly hub-member upon the inner hub-member, to cause the former to snugly fit the periphery of the latter, these means, in the particular construction shown, comprising a ring 19 journaled upon the annular surface 20 concentric with the axis of the wheel, and held in place by extending "into grooves 21 arranged in a continuous series about the surface 20, these grooves being formed in bosses 22, preferably of a number corresponding with the number of pins 13, which, in the case of the construction .shown, is three; The ring 19 is provided at intervals about its periphery .with cam means which cooperate with shouldered portions 23 on the p1ns 13 and which operate in the rotation of the ring in one direction to earn the pins 13 to the left in Fig. 1, thus drawing the hub-member 7 upon the hub-member 6. The construction of the cam means referred to, as I prefer to provide them, involves the provision" of tangentially-disposed cam-surfaces 24 and 25 arranged in pairs, as shown in Fig. 5, about the periphery of the camring 19, these cam-surfaces '24 and 25' of each pair converging relative to each other, as show-n, and preferably beveled, as indicated at 26 and 27, respectively, to provide broadened surfaces for cooperation with the portions 23, which preferably have their surfaces which faces 26 and 27 of the ring 19, beveled, as indicated at 28. The beveled surfaces 26 and 27 are preferably uniformly beveled throughout their length, and in riding from eir low points,-ind-icated at 29 in Fig. 5, to their high points, against the beveled surfaces 28 of the pins 13, operate to force these inasmuch as thereby pins, and with them 4 7, to the left in Fig. 1, on the inner hubfaces 24 and 25 in pairs, as shown, for cooperation with the shouldered parts '23 at opposite sides of the pins 13, is of advantage the pressure exerted by the cam-ring in adjusting it as hereinafter stated, is applied substantially equally at opposite sides of the pins, which prevents tendency of the pins to cant. 1

In order to tions ofthe ring having the cam surfaces 25, I provide clips 30 secured to the nner face of the flange 9, as by the screws 31, these clipscontaining grooves 32 Which'serve as guides forv the said portions of the ring.

In the particular construction illustrated means of 'a pinion 33 drawing. the outer" the pinion 40 being provided between the pinion 33 for normally forc:

oppose the sur-.

the drawings.

the outer hub-member .cam sur- H pinion 33, the portions prevent springing of the portions 23 of ,the cam-ring 19'-is adapted to bemoved into of the position shown' in F 1g. 3 to and out lock the hub-members together, and permit them to be disassembled, respectively, by

meshing with a segmental rack 34 provided on the periphery of the ring 19. The pinion 33 is rigid witha shaft 35, journaled at its headed portion 36 in an opening 37 in the flange 9, and at its opposite end in an opening 38 in the flange 11, this end of the shaft laterally beyond the flange 11 to projecting adapt it to other tool applied to its squared portion 39. The shaft 35- is longitudinally movable, with the flange 9 and an end of 'ing this shaft and pinion to the right in Fig. 6, the-opposite end of this pinion and the opposing face of a boss 41 on the flange 11' surrounding the bearing 38., being provided with cooperating ratchet teeth 42. a

In assembling the parts of the structure, the ring 19 is first applied to position on the hub-member 6, the inner the ring containing notches 43 be passed over the bosses 22 into registration with the grooves 21 therein,'the operator then rotating the ring in clockwise direction, in Fig. 3, to a position in which depressions 44 in the periphery of'the ring adjacent the low points'29 of the cams, are coincident with the dished portions 45 of the bosses 22, the parts of the ring 19 carrying the cams 25 entering the grooves 32. The pins 17 are thensecured in the flange 9 in the position shown in Fig. 2 and the pinion 33, with its shaft 35, is then assembled with the inner hub-member and ring 19 as shown in With the ring 19 rotatably adjusted on the hub-member 6, as stated, the

hub-member 7 "is telescoped with'the member 6, the shouldered portions 23 of the pins 13 passing through thecrecesses 44 and-45, and the inner ends of the pins 13 entering the sockets 14, inv this operation, and the pins 17 entering the openings 18. The operator then rotates the ring 19 in a counterclockwisedirection in Fig. 3 byrotating the the cams 25 sliding in the grooves 32 and the pairs of cams moving against the shouldered portions 23, as explained, to force the hub-member 7 into rigid interlockin engagement with the hub-member 6. In practice the rings 19 would be provided as rights and lefts for the wheels at opposite sides of the vehicle, and each ring would be so arranged with the other parts of the wheel that the tendency of the wheel in rotating will be to draw the ring 19 into closer engagement with the shouldered porthe pins 13, and in addition to this the ratchet teeth 42 on the pinion 33 be rotated, as by means of a wrench or .33, in its bearings, a coil-spring of the ring carrying of said hub-members containing said and boss 41 would be so arranged that while disengages the teeth 42 by pushing the shaft '35 inwardly, and thus the ring against accidental loosening.

In the particular construction illustrated provision is-also made for initially forcing the hub-member' 7 from the hub-member 6 to make its'removal easy when it is desired to remove the ,outer hub-member fromthe innerhub-membenthe means as shown for this purpose comprising cam means between the ring 19. and the flange 11, which are so arranged that in the final rotary movement of the ring 19 ina clockwise direction in Fig. 3 to a position in which the recesses 44 register with member 7 is forced to the right in Fig. 1 a relatively slight distance. These means as shown comprise bosses 46 and 47 on the flange 11 and ring 19, respectively, arranged in pairs about the axis'of the hub, as shown* having beveled faces 48 and which mutually engage and and at, the

in Fig. 4, and 49, respectively, produce the camming action as, time stated.

While I have illustrated and described a particular construction in which my invention is embodied, I do not wish to be understood as intending to limit it thereto, as the same may be variously modified and altered without departing from the spirit of my invention, it being my intention to claim my invention as fully and completely as the prior state of the art will permit.

What I claim as new and desire to secure by Letters Patent is:

1. In a structure of the character set forth, the combination of an inner hubmember and an outer hub-member, a pin carried by one of said members and extending lengthwise of said hub, the other of said members containing a socket, said pin having a shouldered portion and extending at its end into said socket for locking said hub-members against relative rotation, and cam means adjustably supported on the one socket, for cooperation w'th said shouldered portion and operating to draw said hub-members together and hold them against longitudinal separation, said socket and shouldered portion being located at the same side 19 is locked the recesses 45, the huband extending into said sockets,

ing upon shifting' said'third member 'to' draw said hub-members together and hold them. against 'long1tudinal separation, a

gear for actuating sa1d'third member, and means for releasably holding said gear against rotationin a direction contrary to that for forcing said hub-members together.

3. In a structure of the character set forth, the combination of an inner hubmember and an outer hub-member, one of said hub-members being provided with a shoulder, a third member mounted on the other of said hub-members tobe movable thereon and equipped with a cam adapted to cooperate-with said shoulder and operat ing upon shifting said third member to draw said hub-members together and hold 7 them against longitudinal separation, a longitudinally movable shaft, a gear 'on said shaft for actuating said third member, and means for releasably holding said gear against rotation in a direction contrary to that for forcing said hub-members together.

4. In a structure of the character. forth, the combination of an inner member and an outer hub-member, said outer hub-member being. provided with a shoulder, projections on said inner hubmember radiating therefrom and containing ring-guiding grooves, and a ring containing recesses in its' inner periphery adapted to register with said projections andadapting said ring to be applied to said inner hub-member to engage said ring-guiding grooves upon rotating said ring, sai ring being provided with a cam surface adapted to cooperate with said shoulder and operating to force said hub-members together when said ring .is rotated in one direction.

set hubforth, the combination of an inner hubmember and an outer hub-member, flanges on said hub-members forming a housing, the flange on said inner hub-member containing sockets in its inner face, pins projecting laterally from th flange on said outer hub-member and into said housing said pins havin'g shouldered portions, and a ring in said housing rotatably mounted on said inner hub-member and having cam surfaces which oppose, and cooperate with, said shouldered portions and operate when sai ring is rotated in one direction, to' force said pins and said outer hub-member lengthwise of said inner hub-member to draw said hub-members together;

6. In a structure of the character set forth, the combination of an inner hubmember and an outer hub-member, one of said members being provided with a shoulder, and a third member supported on the other of said members to be shiftable-thereon and having a pair of converging cam the end of said outer hub-member extending lengthwise of the structure, said pin bein provided with a shoulder, mounted on said inner hub-member between the ends of the latter for engaging the shouldered-portion of said pin to draw said hub-members together when said ring is r0- tated in one direction, and said inner hubmember containing a sock pin extends when said hub-members are drawn into telescoped relation by the operation of said ring,

rotation of said hub-members.

LEROY BAUMGARTL.

surfaces, said cam surfaces being beveled transversely of their length.

7. In a structure of the character set forth, the combination of an' inner hub-member 5 and an outer hub-member, one of said members being provided with a beveled shoulder, and a third member supported on the other of said members to be shiftable thereon and having a pair of converging cam surfaces for engaging said beveled shoulder, said cam surfaces being beveled transversely of their length. 1

8. In a structure of the character set forth,

the combination of inner and outer'tapered 16 telescoping hub-members, a pin carried on a ring rotatably' et into which said I for preventing relative 

